Neodymium Disc Magnet 2 x 1 mm N48
 
An NdFeB (neodymium) magnet provides high magnetic attraction for its size, making it useful for technical projects, DIY and quick attachments. It is noticeably stronger than conventional ferrite magnets and generally has a protective coating because the material is prone to corrosion. N48 indicates the magnetic grade; a higher number generally means a stronger magnet, with grades commonly ranging from N35 to N52.
 
This very small size is often used in electronics, sensors, model making, prototypes and precision mechanics where an unobtrusive attachment is required. The actual hold depends on the contact surface and the thickness of the metal. Holding force is greater on thick steel than on thin sheet metal.
 
Warning: keep away from children. Strong attraction can cause pinching injuries, and the magnet can chip easily. Store magnets with spacers and avoid impacts. Keep them away from sensitive electronics, cards and medical devices.